The invention relates to a method and device for processing industrial and domestic polyethylene and polypropylene waste by destructive distillation. A method for the destructive distillation of polyethylene and polypropylene waste includes charging a destructive distillation reactor with polyethylene and polypropylene waste that has been pre-cleaned of contaminants by flotation, and heating the furnace of the distillation reactor using a fuel burner; maintaining the temperature in a hydrocarbon collector tank using exhaust gases, regulating the outlet temperature of a vapour-gas mixture of hydrocarbons, and recovering paraffin fractions; fractionating the remaining distillation products in a fractionating column, and regulating the outlet temperature of the remaining vapour-gas mixture from the fractionating column; cooling the remaining vapour-gas mixture, separating same into a naphtha fraction and a gas fraction, and charging a subsequent destructive distillation reactor with feedstock, wherein prior to charging, the bottom part of each reactor is coated with a layer of a non-stick lubricant, the reactor furnaces are connected with the aid of air cushions, and the reactors are charged in several steps according to the following cycle: “charging a reactor with feedstock, generating a vacuum in the charged reactor space, heating the reactor to 110-260°С to liquefy the charged feedstock”.